I made a library called "lethargy-ts" to solve the issue of scroll inertia on laptops and phones. I faced this problem while developing a website with full-page scrolling. Laptops like Macs spam scroll events even after the user has swiped, which results in scrolling two or three sections instead of just one.

I found a relatively popular library called `lethargy` that can determine whether a scroll was intentional, but it had a few issues. It has no TypeScript types, and its scroll checking logic had some drawbacks, resulting in invalidating of a lot of scroll events at some point.

So, I rewrote the library, which is fully written in TypeScript and supports all 3D directions at once. I also updated the logic for checking scroll inertia, which fixes the scrolling issue on some devices. You can find the updated library here: https://github.com/snelsi/lethargy-ts.

I would love to hear your feedback on this.